Par de Bujias Accel HD BT 1948 - 1974Caracteristicas: Accel's state of the art, U Groove spark plugs with ground electrodes, copper glass inner seal and an electric heat seal to prevent leakage in high compression engines Knurled chromium nickel alloy side wire for greater durability and greater spark with reduced voltage Permit the spark to develop a larger, fuller flash for a more complete burn Pure copper core decreases fouling Extra wide heat range Peso: 0. 31 Alto: 1. 14 Largo: 4.